EP2295212B1 - Wood processing machine and suitable parallel stop module - Google Patents

Abstract

The fence module comprises a superstructure (9) overlapping the machine table (3) at sections presenting workpiece extending along longitudinal direction. The guided portions include a guided carriage inserted in a guide groove (14a) on machine table side. The guided carriage comprises number of ball bearings or roller bearings that are movable on rollers in release position. The distance between number of ball or roller bearings contacted with surface in groove is altered while maintaining guide carriage between roll-off and withdrawal positions. An independent claim is included for woodworking machine.

Description

The invention relates to a woodworking machine according to the preamble of claim 17, as well as a suitable rip fence module according to the preamble of claim 1. Such a rip fence module is of the US 2004/0123712 A1 disclosed.

In machine tools, especially in woodworking machines such as e.g. Circular saws or the like must often have workpieces such as e.g. Particleboard on a machine table by a radical tool, such. passed a saw blade over.

Such machine tools therefore often have a relative to the tool in a transverse to a longitudinal direction, eg the working direction of a saw blade extending extension movably received on the machine table rip fence, which has a parallel to the longitudinal direction extending workpiece stop on which the workpiece can be applied so be positioned with its edge facing away from the tool with a certain distance from the tool on the machine table, and then passed by the tool. To set the set distance of the rip fence of the tool during the following machining operation, generic machine tools or their rip fence further comprise a locking device, which are switchable by an operator between a locking position and a release position to lock a guided portion of the rip fence or to re-set the distance between the tool and the workpiece stop release.

In the US patent US 4,322,066 For example, a circular saw with a roller-guided rip-stop module has been proposed to improve the sliding of the guided portion of the rip fence. The guided portion of the rip fence encloses a U-shaped guide attached to a side table guide rib. In the groove base and on an edge of the U-shaped section rollers are attached, over which the rip fence can roll on the guide rib. Furthermore, the rip fence module has a locking device which has a fork-shaped arm which engages around a screw which can be pressed against the guide rib received in the groove between the legs of the guided section or releases it.

In the field of woodworking, guide rails or suitable receptacles for rip fence modules are already present on common machine tables, so that suitable parallel stops can also be sold as individually purchasable rip fence modules.

The workpiece stop is provided on a machine table at least partially cross-over superstructure of the rip fence, wherein the superstructure is in turn slidably received on at least one guided section in at least one designated guide groove on the machine table.

Are known parallel stops, which completely overlap the machine table and are supported in a front and a rear guide on the machine table. Other known rip fence are supported with a guided portion in a provided on a front side of the machine table guide groove and in the rear region of the machine table via a sliding support on the surface of the table top.

A modification thereof is shown in the US patent application US 2004/0123712 A1 , There, a circular saw is provided with a rip fence module, which can be driven by a motor and a spindle arranged along the machine table. For this purpose, the rip fence with a corresponding nut on the spindle is added. The nut is located on a guided section, which is accommodated together with the motor spindle in a guide groove. In this case, the guided section or the carriage passes through the profile of the guide rail with one arm. The arm is connected via a bracket to the superstructure of the rip fence and guided with a guide piece on a T-shaped guide rail end of the guide rail profile.

In both variants, there is always a jamming of the rip fence in the associated, machine table side provided guides.

On this basis, it is an object of the present invention to provide a smooth rip fence module and a woodworking machine with a smooth rip fence, which can be easily attached to the machine table and removed again.

This object is achieved with regard to the rip fence module having the features of claim 1, with regard to the woodworking machine having the features of claim 17.

According to the invention, the guided portion of the rip fence module or the rip fence of the woodworking machine, via which the superstructure of the rip fence is movably supported in a machine table side guide provided one or more in the guide at least partially deployable carriage, which in turn each a number ball or Have roller bearings or ball or roller rollers, over which each guide carriage inserted in the guide groove can roll on assigned rolling surfaces of the guide groove in the release position or on the each carriage in the guide groove in (and counter) the extension direction is rollable. In this case, the guide carriage further comprises a fixed to the superstructure car body on which the number of ball or roller bearings (or rollers) with a preferably variable in the vertical direction with between a Abrollstellung and a removal position or adjustable distance to the respective associated rolling surface are added to the guide groove. In the unwinding position, the number of ball or roller bearings is not applied to the guide surfaces and in the removal position for removing the guide carriage from the guide groove.

In this way, not only a smooth movement of the rip fence relative to the tool, which in particular the accuracy of setting a desired distance between the tool and the workpiece stopper benefits and thus the rip fence also not as easily jammed as with parallel sliding rip fence modules.

Rather, the carriage can be used in the removal position in a particularly simple manner with its roles in the guide, so that a total of a particularly easy attachment of the rip fence module succeeds the machine table. Before the rip fence is put into operation, the ball or roller bearings are then brought into their unrestrained unwinding position, which is assigned to rolling surfaces in the guide rail that run in the extension direction. If the rip fence module is removed again from the machine table, the ball or roller bearings (or rollers) are again moved from their resting on the associated rolling surfaces unwinding position in the non-fitting removal position. After that, the guide carriage can again very easily be removed from the groove and the rip fence module lifted off the machine table.

The number of ball or roller bearings can be fastened to the car body, for example, by means of an arm arrangement that is movable perpendicular to the extension direction, preferably in the vertical direction or can be swiveled or pivoted in this direction. The removal position then corresponds to a position the arm assembly, in which the number of ball or roller bearings is not spread perpendicular to the extension direction against the drainage surfaces. An expanded position of the arm assembly in the guide then corresponds to the unwinding position.

Particularly preferred is a biasing device is provided which biases the ball or roller bearings in the unwinding position, preferably an attacking on the arm assembly, the arm arrangement in the spread position unwinding biasing biasing means, so that the bearings used in the guide against the rolling surfaces of the associated guide groove be biased.

Overall, therefore, an exact guidance of the rip fence in the guide groove without stuttering when moving succeeds.

Of course, in a guide groove provided on the front side of the machine table and in a guide groove provided on the rear side of the machine table, a rip fence supported by a guided section can be provided in both guide grooves. It would also be conceivable for the rip fence to be movably received on the machine table via a plurality of guide carriages supported in a guide groove or ball bearing. In a rip fence, which is only included in a guide groove on the front of the machine table, and slides on the back of the machine table via a sliding portion on the table top, however, only one recorded in the front guide groove carriage is necessary. Here, however, it would be conceivable to further improve the smooth running of the rip fence, instead of the back sliding section to support the rip fence there over a role.

A woodworking machine according to an advantageous embodiment of the invention further comprises a table widening with a pull-out element, which for widening the machine table has a positionable next to the machine table extracting plate which is received between two extension arms attached to the extension, which in turn are guided in two table side fastened guide rails in the extension direction, wherein at least the front of the extension arms of a guided groove for the guided Section of the rip fence is penetrated.

In this way, the stop can be used not only both in the extended state of the table widening and in the retracted state of the table widening, but also the distance of the rip fence or the workpiece stop of the rip fence are set by the tool regardless of the state of extension of the table widening. Furthermore, a two-step adjustment of the distance of the workpiece stop can be achieved by the tool on the optional table widening: First, the table widening is roughly brought to the correct position with ratchet locked in the guide grooves or on the guide arms, then is about the smooth in the guide groove sliding guide carriage of the rip fence the distance of the workpiece stop of the tool finely adjusted (after the locking device of the rip fence has been solved).

For manually changing the distance of the number of rollers from the associated rolling surfaces or for manually lifting the number of rollers for the purpose of removing the guide carriage from the guide groove can be provided an adjusting lever, which is coupled via a coupling device with the arm assembly. The fact that a separate handle or lever is provided for spreading or retracting the arm assembly, a conscious unlocking of this lever must be made for the removal of the rip fence of the machine table, ie the number of rollers are brought into the removal position in which they does not abut the respective associated rolling surface.

The arm assembly may comprise an arm, one end of which is pivotally attached to the carriage body about a longitudinal axis of rotation and the other end carrying at least one roller. If the role of the lever and the coupling device, for example: a car body cross, with the lever connected or connectable coupling pin pivoted upwards, so the role of the rolling position, in which the car body and thus the rip fence stored on her, in the Removal position be brought, in which case, for example, the superstructure of the rip fence module rests on the table top of the machine table.

However, the arm arrangement preferably comprises a rocker preferably mounted pivotably about a longitudinally extending axis of rotation on the carriage body, with two bearing bolts fastened on opposite sides of the rocker, at least one roller being accommodated on the bearing bolt. The carriage body can then be supported in the unrolling position via the arm assembly and the rollers between an upper and a lower rolling surface in the guide groove. As a result, the rip fence is not only particularly safe, but also guided very smoothly due to the relief of the lower roller. Theoretically, a support between two vertically extending side walls of the guide would be conceivable.

According to a further advantageous development, the locking device has a contact strip which can be received in the respective guide groove, that is, for example, in a guide groove facing the operator on the front side of the machine table. In this case, the pressure bar over a longitudinally engaging in the guide coupling means between the locking position, in which it is pressed against the back of an extending in the extension direction undercut of the guide groove, and the release position in which it is lifted from the back of the undercut, be switchable , The locking device may further comprise a counter-holding surface, which is pressed against a contact surface on the machine table, when the pressure bar in the Arresting position is moved, so that a counter-holding force is generated against the force exerted on the pressure bar pressing force, whereby the locking of the rip fence takes place. Preferably, a contact surface located on the pressure strip and the counter-holding surface extend in another, preferably vertical plane to the drainage or rolling surfaces for the rollers (bearings), so that the operation of the locking device completely independent of the setting of the guide of the rip fence or the Spend the arm assembly in the removal position or the guided position is possible.

If the counter-holding surface are located on the carriage body and the contact surface on the guide rail on the front side opposite the rear of the undercut, can be locked by moving the pressure bar relative to the car body of the rip fence or unlocked for moving. Therefore, it is advantageous if the pressure bar is displaceable over the coupling device relative to the carriage body in the longitudinal direction. In this way, a reliable and easy-to-use locking or release of the rip fence in the extension direction succeeds.

A further advantageous embodiment of the invention relates to a swivel lever received on the superstructure, which is provided as an actuating device for the locking device. The pivot lever is pivotable between the release position and the locking position about an example extending in the extension direction, preferably horizontal pivot axis and has at least one eccentrically to its pivot axis extending guide portion over which the locking switchable, ie between the locking position and the release position can be actuated. In this case, the above-mentioned coupling device can advantageously be coupled to the pivot lever via its eccentric to the pivot axis extending guide portion with the pivot lever.

Alternatively or in addition to the locking of the rip fence with the help of a acting on the front guide Arreitiervorrichtung the superstructure of the rip fence module can be formed as a machine table in the longitudinal direction completely overarching portal superstructure, which has on its rear side facing away from the operator side of the machine table a clamping pin, which via the actuating device, ie preferably via the pivot lever in a associated, machine table side provided guide groove can be pressed, which corresponds to the locking position, and which is further engageable in the transverse to the longitudinal direction movable release position. In order to press the chuck in the locking position or in the associated guide groove, or to clamp the chuck in this position against a further clamping device on the front of the machine table, for example, a contact surface on the front guide groove, while the superstructure in the longitudinal direction by cross Tensioning rod may be provided, which - as it may be the coupling of the coupling device - may be accommodated in an eccentric guide portion on the pivot lever. About a pivoting of the pivot lever, which rests with an outer peripheral clamping surface on an associated contact surface on the superstructure, thus the tension rod can be put under tension or pressure, so that the chuck tensioned against contact surfaces in the associated guide, so it can be locked in the guide and also relieved again, so can be released.

The locking device can on the front of the machine table simply counter stop surfaces have, which are pressed against corresponding contact surfaces on the machine table when the clamping pin and / or the pressure bar are moved into the locked position. In a release of the lock on the provided as an actuating device for the locking pivot lever of the rip fence then (at the same time entnahmefähig arranged bearings) can be lifted altogether from the machine, so that an easy assembly and disassembly of the rip fence is possible.

In order to provide a high level of security against displacement of the rip fence even under lateral pressure of the workpiece, a combination of the clamping pin with a development of the invention described above with a pressure strip provided in a guide groove provided on the front side of the machine table proves to be particularly advantageous. In addition, the fixation of the rip fence on both sides of the machine table allows a high angular accuracy to the longitudinal direction, ie, for example, to a saw blade provided as a tool. If the pressure bar (for example, via the coupling device) also connected to the pivot lever of the locking device, so in this embodiment, the lock can be solved with a handle and found again.

The adjusting lever for lifting the number of rollers from the associated rolling surfaces can advantageously be coupled via the same coupling device with the arm arrangement as the pivot lever for actuating the locking device. For this purpose, the coupling device may have a longitudinally extending in the carriage body rotatably received coupling pin, on its side facing the guide groove on the one Armanordnung, or the rocker is pivotally received and on the other to the pressure bar is fixed, preferably at the free ends the bearing pins on which the rollers are received on the rocker.

The lever located on the side facing away from the rocker side of the car body actuating lever may have a penetrated by the coupling pin and rotatably connected to the coupling pin hinge eye portion with which he connects on its side facing the rocker to the car body. On the side facing away from the rocker or the car body side of the hinge eye portion may then be provided to the coupling pin with an actuating device of the locking, rear coupling portion over which the coupling pin between the locking position in which he is pulled out of the guide so far that the pressure strip rests against the rear of the distinction, and the release position, in which it is pushed so far into the guide groove, that the pressure strip rests against the back of the distinction, is displaced.

A further advantageous development relates to the attachment of an angle rail forming a workpiece stop by means of an angle rail tensioning device on the superstructure, preferably on a carrier profile of the superstructure fastened between a front girder and a rear girder. The angle rail can be tensioned by means of the angle rail clamping device and released for movement in the longitudinal direction. Advantageously, the angle rail in this case has a longitudinally extending, undercut groove and the angle rail clamping device recorded in the undercut groove pressure bar and a cross-section of the carrier profile and bolted to the Anpressleiste clamping screw with a tension spring over which the pressure bar is biased away from the carrier profile ,

To loosen and re-attach the angle rail after a shift in the longitudinal direction is only one handle necessary to determine the clamping screw, if at the end facing away from the Anpressleiste clamping screw, a handwheel is placed. Further, by means of the tensioning spring preferably around the clamping screw around the pressure bar in the groove of the angle rail is always kept at a distance as soon as the clamping screw is released, whereby a lighter retraction of the angle rail on the Anpressleiste and thus shorter assembly and disassembly times are possible.

The features of the other subclaims relate to the specific embodiment of the functional inventive concept with structural features, which will be explained in more detail in connection with the explanation of preferred embodiments of the invention with reference to the accompanying drawings. It should be noted that the features of the embodiments not only in the concrete shown and explained combination, but also any other, seemingly meaningful combination with the main claims should be covered by the invention. It should also be noted that the structure of the guide carriage proposed in claim 2 is also advantageously used when provided on its car body instead of the ball or roller bearings or rollers sliding portions. A rip fence module having the features of the preamble of claim 1 and the features of claim 2, wherein ball bearings and / or sliding portions are movably provided on the carriage body and a corresponding woodworking machine having the features of the preamble of claim 17 and a correspondingly constructed guide carriage could therefore - optionally together with the features mentioned in the preceding description passage, the features mentioned in the further subclaims and the further features described in connection with the drawings in any meaningful combination - are the subject of a separate application. It would also be conceivable to make the proposed in claim 3 construction of the locking device together with the features of the preamble of claim 1 and 17 to the starting point of a separate application, in particular together with the other optional, the structure of the locking device and its coupling with the guided Section characteristics. A rip fence module having the features of the preamble of claim 1 and a woodworking machine having the features of the preamble of claim 17, together with the features of claims 15 and 16, and optionally the further subclaims could be made the subject of a separate application.

Figur 1

eine perspektivische Ansicht eines Maschinentisches einer Kreissäge mit einem Parallelanschlagsmodul gemäß einer bevorzugten Ausführungsform der Erfindung;

Figur 2

eine Teil-Draufsicht auf die in Figur 1 dargestellte Kreissäge;

Figur 3

eine Teil-Ansicht einer in der in den Figuren 1 und 2 dargestellten Ausführungsform der Erfindung verwendeten Führungsschienenanordnung für das Parallelanschlagsmodul;

Figur 4

einen Schnitt durch das in den Figuren 1 und 2 gezeigte Parallelanschlagsmodul entlang der Linie II-II in Figur 2;

Figur 5

Einzelheit V in Figur 4;

Figur 6

eine Detailansicht eines Führungswagens des in den vorherigen Figuren gezeigten Parallelanschlagsmoduls von oben;

Figur 7

eine weitere Detailansicht des Führungswagens in einer teilweise geschnittenen Darstellung von der Seite her;

Figur 8

eine teilweise ausgeschnittene Ansicht des auf der Bedienerseite befindlichen Abschnitts des in den vorherigen Figuren dargestellten Parallelanschlagsmoduls von einer der Figur 4 entsprechenden Seite aus;

Figur 9

eine Schnittansicht entlang der Linie IX-IX in Figur 8;

Figur 10a

eine Seitenansicht einer Unterlagscheibe einer Kupplung zwischen einer Arretiervorrichtung und einer Lagerspieleinstelleinrichtung des in den vorstehenden Figuren gezeigten Parallelanschlagsmoduls;

Figur 10b

eine perspektivische Ansicht der in Figur 10a dargestellten Unterlagscheibe;

Figur 11

eine perspektivische Ansicht eines der in den Figuren 10a und 10b dargestellten Unterlagscheibe zugeordneten Schiebestücks der Kupplung;

Figur 12

eine Detailansicht eines in einer am Maschinentisch befestigten Führungsschiene aufgenommenen Endes eines Auszugarms, in welchem eine Führungsnut für das Parallelanschlagsmodul gemäß den vorstehenden Figuren vorgesehen ist;

Figur 13

eine Detailansicht eines dem Parallelanschlagsmodul der vorherstehenden Figuren zugewandten Endes der die Auszugsarme aufnehmenden Führungsschienen; und

Figur 14

eine Detail-Schnittansicht entlang Linie XIV-XIV in Figur 2 auf einen der in den Führungsschienen aufgenommenen Führungsarm, an dem die Führungsnut für das Parallelanschlagsmodul bei der in den vorstehenden Figuren gezeigten Ausführungsform der Erfindung vorgesehen ist.

Show it:

FIG. 1

a perspective view of a machine table of a circular saw with a rip module according to a preferred embodiment of the invention;

FIG. 2

a partial top view of the in FIG. 1 illustrated circular saw;

FIG. 3

a partial view of one in the FIGS. 1 and 2 illustrated embodiment of the invention used guide rail assembly for the rip fence module;

FIG. 4

a cut through that in the FIGS. 1 and 2 Parallel rip module shown along the line II-II in FIG. 2 ;

FIG. 5

Details V in FIG. 4 ;

FIG. 6

a detailed view of a carriage of the rip fence module shown in the previous figures from above;

FIG. 7

a further detail view of the carriage in a partially sectioned view from the side;

FIG. 8

a partially cutaway view of the operator side portion of the rip fence module shown in the previous figures of one of FIG. 4 corresponding page;

FIG. 9

a sectional view taken along the line IX-IX in FIG. 8 ;

FIG. 10a

a side view of a washer of a coupling between a locking device and a Lagerpieleinstelleinrichtung of the rip fence module shown in the preceding figures;

FIG. 10b

a perspective view of in FIG. 10a illustrated washer;

FIG. 11

a perspective view of the in the Figures 10a and 10b illustrated washer associated sliding piece of the coupling;

FIG. 12

a detailed view of an end of a Auszugarms received in a guide rail fixed to the machine table, in which a guide groove for the rip fence module according to the preceding figures is provided;

FIG. 13

a detail view of the rip fence module of the preceding figures facing the end of the extension arms receiving guide rails; and

FIG. 14

a detail sectional view taken along line XIV-XIV in FIG. 2 on one of the guide arms accommodated in the guide rails, on which the guide groove for the rip fence module is provided in the embodiment of the invention shown in the preceding figures.

First, reference is made to the FIGS. 1 to 3 which show a machine table 3 of a circular saw designated 1, to which a table widening module and a rip fence module on the lying in the extension direction A side is grown. On the machine table 3, a tool slot 2 is provided, through which a circular saw blade of the circular saw can grip, wherein on one side of the tool slot 2, an extension plate 8 of the Tischverbreiterungsmoduls is grown and on the other side of the tool slot 2, a miter module 4. The Tischverbreiterungsmodul is designed so that the machine can be easily reconfigured by the extract element is attached to the other side of the table.

These are along the machine table 2 front and rear at the outer end of the Table each a guide rail 6a, 6b attached, in which two extension arms 7a, 7b are recorded guided, between which the extension plate 8 is fixed flush with the top of the machine table 3 top side. An extract element of the table widening module thus comprises not only the extension plate 8 but also the two extension arms 7a, 7b and does not have to be disassembled before it is inserted again into the guide rails 6a, 6b on the other side of the table.

The guide rails 6a, 6b are in each case penetrated by a guide groove 6a, 12a, or 6b, 12b over their entire, extending in the extension direction A length, which of the guide rail 6a, 6b itself or its inner cross-section and one on the side of the extension plate. 8 each plugged sliding bush 12a, 12b is formed. The guide arms 7a, 7b are the respective guide groove 6a, 12a, and 6b, 12b taken guided and have over their entire length a constant, not undercut cross-section. On her in the respective guide groove 6a, 12a, and 6b, 12b recorded end is in each case a sliding cap 11a - or on the opposite side not shown here - 11 b screwed.

The ends of the guide arms 7a, 7b provided with one of the sliding caps 11a, 11b in each case are the one FIG. 12 to be taken in detail. It can be seen that the sliding caps 11a, 11b slide on the inner surface of the respective guide rail 6a, 6b in the respective guide groove 6a, 12a or 6b, 11b.

In contrast, the ends of the guide rails 6a and 6b which are provided with the sliding bushes 12a and 12b and which face the extension plate 8 are in detail the one FIGS. 13 and 14 refer to. It can be seen that the slide bushes 12a, 12b are plugged into the guide rail 6a or 6b from the side. For this purpose, slide bushings 12a, 12b each have a screw-in guide groove 19, with which they can be plugged onto fastening screws 18 provided on the guide rail 6a. The Slide 12 must then be rotated to attach or remove only.

Reference numeral 10 is in FIG. 1 Further, a locking means of the table widening module is designated, with which the pull-out element can be fixed in a desired position by means of locking lugs 10f accommodated in locking grooves 17a in the pull-out arms 6a, 6b, as again FIG. 14 can be seen. There is also a Parallelanschlagverschiebenut 14a in the extension arm 7a to recognize, which corresponds due to the same part of the extension arms 7a, 7b a similar groove 14b in the other, located on the rear side of the machine table extension arm 7b.

The rip fence module is thus accommodated displaceably on the extension arms 7a, 7b independently of the pull-out position of the pull-out element in the rip fence displacement groove 14a and the corresponding groove 14b. Furthermore, on the two extension arms 7a, 7b, an end cap is screwed onto the end located on the side of the rip fence (only the end cap 13b provided on the rear extension arm 7b is shown in the drawing), which serves as a securing stop for the rip fence module.

Furthermore, the two extension arms 7a, 7b each have a further, upper-side receiving groove 15a, in which, for example, a sheet metal with a longitudinal scale on it can be received or pasted. In the FIG. 2 Furthermore, a viewing window 15b can be seen, through which a user can look at a width scale located on the guide rail 6a when using the rip fence when the table extension is not extended. If the operator wants to use the rip fence with the table widened, the rip fence must first be moved against the end cap 13b. The measure can then be read with a mounted on the guide rail 7a end of the extension arm 6a and the sliding cap 11a attached scale pointer on another, attached to the guide rail 7a scale. In both cases one can see how far one through one Angle rail 9d formed workpiece stop of the rip fence of the tool or the tool slot 2 is removed.

The rip fence module has a superstructure, generally designated 9, with which it overlaps the machine table 3 in the longitudinal direction L. The superstructure 9 has a front bracket 9a, and a rear bracket 9c, between which a carrier profile 9b is screwed. On the carrier profile 9b, the angle rail 9d is displaceably received in the longitudinal direction L via a tensioning device 17.

The in the FIGS. 1 and 2 generally designated 17 angle rail tensioning device is in the FIG. 3 to be taken in detail, but the angle rail 9d is omitted. The carrier profile 9b is penetrated by a clamping screw 17b, at one end of a handwheel 17a is placed, whereas the other end of the clamping screw 17b is screwed into a in an undercut groove of the angle rail 9d insertable pressure bar 17c. To the clamping screw 17b while a tension spring 17d is placed around, which keeps the pressure bar always at a distance, so that a lighter retraction of the workpiece stop forming angle rail 9d allows the pressure bar 17c. In addition, the pressure bar 17c is guided over the guide bolt 17e which extends through the undercut groove on both sides of the clamping screw, which also passes through the undercut groove, against tilting in associated bores on the carrier profile 9b.

How the particular FIG. 4 can be seen, in the FIGS. 1 . 2 generally designated 16 locking means for locking the rip fence module in the guide grooves 14a, 14b of the two extension arms 7a, 7b while a lever 16a on which a Spannstangenzugbolzen 16f a portal-shaped superstructure 9 by cross-tie rod 16b is added. At the pivot lever 16a opposite end of the tension rod 16b while a clamping pin 16c is fastened via a bolt not shown in detail on the tension rod 16b. The clamping pin 16c is suspended via a hinge axis 16d on the rear bracket 9c of the portal superstructure 9, which is fastened via a joint clamp 16e to the rear bracket 9c. The tensioning lever 16a is in this case, in particular the FIG. 8 can be seen, with an outer peripheral surface 16h on an associated bearing surface 9e on the front block 9a of the superstructure 9 and is biased over the clamping rod 16b or around the clamping rod 16b around the clamping rod biasing spring against the contact surface 9e.

The tension rod tension bolt 16f, via which the tension rod 16b is fastened to the pivot lever 16a, is received in a receiving bore 16k extending in the extension direction A for the tension rod tension bolt 16f. The receiving bore 16k penetrates the pivot lever 16a at a location eccentric to its pivot axis. At the other end, the tension rod 16b below the pivot point of the clamping pin 16c is attached to the rear bracket 9c on the clamping pin 16c. The clamping pin 16c in this case has a nose, with which it can be clamped against abutment surfaces or edges on the undercut groove 14b in the extension arm 7b on the side facing away from the operator of the machine table 3, if over the tension rod 16b opposite to the longitudinal direction L. acting train on the clamping pin 16c is exercised. In the FIG. 4 and 8th the clamping pin 16c is in a position abutting against the contact surfaces on the undercut groove 14b, ie locked position. To release the clamping pin 16 c from this position, the pivot lever 16 a must be pivoted upwards, so that the eccentrically received tie rod draw bolt 16 f in the FIG. 4 and 8th to the right, that is moved in the longitudinal direction L and thus on the tension rod 16b a corresponding pressure on the clamping pin 16c is exercised. For re-locking the rip fence module in the guide grooves 14a, 14b of the extension arms 7a, 7b, the pivot lever 16a can be pressed down again.

However, not only the clamping pin 16c can be pivoted from a locking position into a release position and back via the pivoting lever 16a, which is located on the machine table rear side, but also on a front side in the local Parallelanschlagsverschiebenut 14a recorded, guided section 24, 16g a locking (or release) of the rip fence module be accomplished. It is held against the front not only against the clamping force of the clamping pin (which would be conceivable), but a separate, the rip fence module in the front guide rail 14a also locks alone (and releasing) locking device operated. The rip fence module can therefore be stretched on the one hand via the clamping pin 16c behind and on a described below, associated counter-holding device on the front of the two extension arms 6a, 6b and locked so. In addition, the rip fence module can be clamped on the front extension arm 6a via the lock on the front side in the local rip fence displacement groove 14a, guided section 24, 16g. Overall, this results in a very small angle error of the tension.

For a more detailed explanation of the use of this from a generally designated 24 carriages and a pressure bar 16g formed in the Parallelanschlagsverschiebenut 14a guided portion 24, 16g is now on FIG. 5 referenced, which in FIG. 4 represents V designated detail.

The guide carriage 24 in this case has a voltage applied to an upper horizontal contact surface of the Parallelanschlagsverschiebenut ball bearing 24a and a in FIG. 5 unrecognizable, to the opposite, lower horizontal contact surface of the rip fence 14a adjacent ball bearing 14b (rolling position, in the removal position for removal of the rip fence module from the machine table is not one of the two ball bearings 24a, 24b on one of the contact surfaces). The ball bearings 24a, 24b are pressed onto assigned bearing pins 24d, 24e, which at one end in particular one FIGS. 6 and 7 to be removed rocker 24c are attached and the other end spacers stack 24i, 24j spaced from the ball bearings 24a, 24b are provided with a pressure bar 16g. The rocker 24c and the bearing bolts 24d, 24e press-fitted on both ends thereby form a arm arrangement 24c, 24d, 24e which can be spread or pivoted against the horizontal abutment sliding groove 14a by a coupling pin 25a, wherein the rocker 24 is non-rotatably connected to the coupling pin 25a via a securing pin 24k.

The coupling pin 25a passes through a superstructure 9 fixable car body 24f and a lever 23, wherein the guide pin 25a is connected via a tongue and groove connection in an eye portion 23a of the actuating lever 23 with the lever 23. In order to move the coupling pin 25a - and thus the arm assembly 24c, 24d, 24e attached thereto - into or against the longitudinal direction L, one is shown in FIG FIG. 4 generally designated by 25 clutch device is provided, which in addition to the coupling pin 25a on the side facing away from the Parallelanschlagsverschiebenut a rear coupling portion 25b, 25c, 25d, via which the coupling pin 25a in the longitudinal direction L is displaceable.

The rear coupling portion 25b, 25c, 25d is coupled to the pivot lever 16a of the locking device 16, so that not only the clamping pin 16c can be pivoted between its locking position and its release position on this pivot lever 16a, but also the coupling pin 25a and thus ultimately to the clamping pin 25 a fixed pressure bar 16 g from its against the back of the undercut of the guide groove 14 a applied locking position in a lifted off the back of the undercut release position (and back). In the locked position, the pressure bar 16g presses from the inside against the undercut of the guide groove 14a and at the same time also the Auszugarm 7a facing (and thus the pressure bar 16g facing) side surface of the carriage body 24f as a counter-holding surface from the outside against a corresponding contact surface of the extension arm 7a.

The pivot lever 16a has to a spiral around its pivot axis extending guide groove 16i, in which a guide pin 16j is added to the, compare FIGS. 8, 9 , a sliding piece 25b is suspended. The sliding piece 25b has two the coupling pin 25a embracing arms on which it is suspended from the guide pin 16j. The sliding piece 25b is received vertically displaceable between a vertically extending surface of the actuating lever 23 and a washer 25c.

The sliding piece 25b and the associated washer 25c are in the FIGS. 10 and 11 shown in detail. It can be seen that two curved coupling projections 25h are provided on the sliding piece 25b toward the washer 25c, to each of which a coupling groove 25g provided on the surface of the washer 25c facing the sliding piece 25b is associated. The coupling grooves 25g begin, as in FIG. 8 can be seen at the upper end of the washer 25c and end with a rounded edge in an area in which the coupling projections 25h are, shortly before by depressing the pivot lever 16a (arrow "closed") the clamping bar 16g against the undercut of the guide rail 14a is placed.

If the pivot lever 16a is now pressed even further, the coupling projections 25h press against the lower flanks of the coupling grooves 25g and thus cause a displacement of the washer 25c against the longitudinal direction L, ie towards the operator. The washer 25c is penetrated at a central bore 25f of the coupling pin 25a and screwed via a coupling screw 25d with the coupling pin 25a, so that when Betätigungsle the pivot lever 16a with the washer 25c and the coupling pin 25a and thus ultimately the pressure bar 16g to the operator is moved.

The coupling projections 25h come to rest against the underside flanks of the coupling grooves 25g, thus are in an intermediate position located between the release position and the locking position. there the pressure bar 16g is pulled against the undercut 14a of the guide groove in the extension arm 7a and aligned at right angles.

If the pivot lever 16a is pressed down a few degrees further, the intermediate position is run over and the coupling projections 25h emerge from the coupling grooves 25g. As a result, finally, the actual locking (locking position), in which the extension arm 7a between the clamping bar 16g and the clamping bar 16g facing side of the carriage body 24f is really tight.

Preferably, the length and position of the coupling grooves 25g so on the drive train 16f, 16b, 16d tuned for the rear chuck 16c that the pressure bar 16g is pressed against the undercut 14a of the guide groove in the extension arm 7a before the actual locking on the clamping lever 16a he follows.

In the release position, therefore, the adjusting lever 23 is not under tension between the carriage body 24f and the rear coupling arrangement 25b, 25c formed by the sliding piece 25b and the washer 25c, so that the rocker 24c can be moved by turning the adjusting lever 23. In contrast, in the locking position, the adjusting lever 23 is clamped between the carriage body 24f and the rear coupling arrangement 25b, 25c, so that a spread or a horizontal position of the rocker 24c or 24c of the arm 24c and the bearing pin 24d, 24e formed arm assembly 24c, 24d 24e can not be made unintentionally in this position.

In order to bias the rocker 24c into the release position, there is further provided a clutch pretensioning spring 25e which is placed around the coupling bolt 25a and which is supported on the rocker 24c on the one hand and on the carriage body 24f on the other hand (FIG. FIG. 6 ). The carriage body 24f further has, on its side facing the rocker 24c, an annular projection 24g which circumferentially surrounds the clutch pretensioning spring 25e and into an associated one Recess be sunk in the rocker. The distance between the carriage body 24f and the pressure bar 16g can thus be adjusted in the release position via the screw-in depth of the coupling set screw 25d.

Furthermore, a biasing spring 241 is provided for the rocker 24c, via which the rocker 24c is biased into an expanded position, ie, a position in which the ball bearings 24a, 24b bear against the abutment surfaces of the rip fence 14a provided for this purpose. FIG. 7 ). The biasing spring 241 is placed on a biased with a vertical screw axis from below into the car body 24f bias spring-removal screw 24m and on the other hand supported in a recess provided on the rocker 24c in the vicinity of the bearing 24a. On the other side of the rocker 24c in the vicinity of the bearing 24b, a vertical screw axis adjusting screw is further screwed from below into the carriage body 24f, which functions as an adjustable abutment point. By way of the preload adjusting screw 24m, it is possible to set a pretensioning force with which the pretensioning spring 241 biases the rocker 24c into the spread-open position.

Finally, it will open again FIG. 4 to emphasize that the rip fence module of the illustrated embodiment, while on both sides of the machine table or the attached extension plate 8 in the provided in the extension arms 7a, 7b grooves 14a, 14b braced, or can be locked. However, in the release position, the rip fence module is guided over ball bearings 24a, 24b only in the front rip fence sliding groove 14a facing the operator, but not in the rear groove 14b. Rather, the rip fence module is in its rear area via a sliding bush 26 slide-supported on the surface of the machine table 3 and the extension plate 8, depending on the position based on the table top 3 and the extension plate 8. It would also be conceivable, instead of the slide bushing 26th to provide a roller or the like.

The guide rails 6a, 6b are fastened via screw connections, not shown, on the machine table 3, the extension arms 6a, 6b, however, via fastening screws 27 (FIGS. FIG. 6 ) on the extension plate 8.

Of course, modifications and modifications of the embodiment shown are possible without departing from the scope of the claims.

LIST OF REFERENCE NUMBERS

A

extraction direction

L

longitudinal direction

1

Circular saw (machine tool)

2

tool slot

3

machine table

4

Gehrungsanschlagsmodul

6a, 12a, 6b, 12b

Guide grooves (guide section)

6a, 6b

guide rails

7a, 11a, 7b, 11b

sliding

7a, 7b

extension arms

8th

pull-out shelf

9

portal superstructure

9a

front goat

9b

carrier profile

9c

back buck

9d

angle rail

9e

Exzenterspannfläche

10

Locking device of the table extension

10f

Locking block of the table widening

11a, 11b

Sliding caps (sheathing)

12a, 12b

Sliding bushings (lining)

13b

endcap

14a

Parallelanschlagsverschiebenut

14b

back groove

15a

Receiving groove for width scale

15b

window

16

locking device

16a

pivoting lever

16b

tension rod

16c

chucking spigot

16d

joint axis

16e

hinge clamp

16f

Spannstangenzugbolzen

16g

pressure bar

16h

Outer circumferential contact surface

16i, 16k

eccentric guide sections

16i

Sliding piece guide groove

16j

Sliding piece guide pin

16k

Spannstangenzugbolzen receiving bore

161

Tie rod biasing spring

17

Angle bars jig

17a

handle

17b

clamping screw

17c

pressure bar

17d

tension spring

17e

guide pins

18

Bushings mounting bolt

19

Einschraubführungsnuten

21

undercut groove

22

stop surface

23

Clearance partial lever

23a

segment of the eye

24

Carriage (guided section)

24a, 24b

roller bearing

24c

seesaw

24d, 24e

bearing bolt

24f

car body

24g

annular projection

24 hours

coupling pin

24i, 24y

Shim stack

24k

Cotter pin for coupling pin

24l

Preloading spring for the rocker (pretensioner for the arm arrangement)

24m

Clamp force adjustment

25

coupling device

25a

coupling pin

25b, 25c, 25d

rear coupling section

25b

sliding piece

25c

washer

25d

coupling screw

25e

Clutch biasing spring

25f

Drilling the pad

25g

coupling grooves

25h

coupling projections

25i

Splintaufnahmeöffnungen

26

sliding sleeve

27

fixing screw

Claims (18)

1. A rip fence module for a machine tool (1), in particular a panel sizing circular saw (1), in order to position workpieces with their edge facing away from a tool (2) on a machine table (3) at a certain distance to the tool (2), comprising a superstructure (9) overlapping the machine table (3) at least in sections presenting a workpiece stop (9d) for the workpiece to be treated extending in a longitudinal direction (L),
   at least one guided portion (24, 16g) which is insertable and guidable in an allocated guide groove (14a) provided on the machine table side extending in an extension direction (A) transversely to the longitudinal direction (L), and by which the superstructure (9) is supported movably in the guide groove (14a) in the extension direction (A) in relation to the tool (2), and
   a locking device (16) shiftable between a locking position and a release position in order to lock the rip fence module in the locking position at a guided portion (24, 16g) defined in relation to the guide groove (14a), and to permit in the release position a shifting of the guided portion (24, 16g) in the guide groove (14a),
   characterised in that
   the guided portion (24, 16g) comprises a guided carriage (24) insertable in the guide groove (14a) at least in sections which in turn comprises a number of ball bearings or roller bearings (24a, 24b) by means of which the guided carriage (24) inserted into the guide groove (14a) is movable on rollers in the release position on allocated roll-way surfaces, with
   the guided carriage (24) presenting a carriage body (24f) defined on the superstructure (9) on which (carriage body) the number of ball bearings or roller bearings (24a, 24b) is received with an alterable distance to the roll-off surface allocated in each case, and with
   the distance between a roll-off position, in which each of the number of ball bearings or roller bearings (24a, 24b) abuts a roll-way surface in the guide groove (14a), and a non-abutting withdrawal position for withdrawal of the guided carriage (24) inserted into the guide groove (14a) from the guide groove (14a), being alterable.
2. A rip fence module according to claim 1, characterised in that the distance between each ball bearing or roller bearing (24a, 24b) and the allocated roll-way surface is alterable in vertical direction with the number of ball bearings or roller bearings (24a, 24b) being received preferably via a movable arm arrangement (24c, 24d, 24e) with alterable distance on the carriage body (24f) and preferably a preloading device (24l) being provided by means of which the arm arrangement (24c, 24d, 24e) is preloaded into the roll-off position in which the ball bearings or roller bearings (24a, 24b) are spreaded against allocated roll-way surfaces in the guide groove (14a).
3. A rip fence module according to claim 1 or 2, characterised in that the locking device (16) comprises a contact pressure strip (16g) receivable in the respective guide groove (14a) with the contact pressure strip (16g) being shiftable via a coupling device (25) engaged in longitudinal direction (L) into the guide groove (14a) in relation to the carriage body (24f) in longitudinal direction (L) between the locking position, in which it bears against a rear side of an undercut of the guide groove (14a) extending in extension direction, and the release position, in which it is detached from the rear side of the undercut.
4. A rip fence module according to claim 3, characterised in that the carriage body (24f) in its section facing towards the contact pressure strip (16g) comprises a counter-retaining surface for a bearing surface on a front side of the undercut so that the counter-retaining surface in the locking position abuts the bearing surface and does not abut the bearing surface in the release position.
5. A rip fence module according to claim 1 or 2, characterised in that for manual modification of the distance of each ball bearing or roller bearing (24a, 24b) to the corresponding allocated roll-way surface on the guide groove (14a) an adjusting lever (23) is provided which is preferably coupled via the coupling device (25) with the arm arrangement (24c, 24d, 24e) such that the arm arrangement (24c, 24d, 24e) at least in the release position of the locking device (16) is movable between the withdrawal position and the rollable position.
6. A rip fence module according to claim 2 or 5, characterised in that the arm arrangement (24c, 24d, 24e) comprises a rocker (24c) attached pivotably on the carriage body (24f), with two bearing bolts (24d, 24e) attached on two opposite sides of the rocker (24c), with at least one ball bearing or roller bearing (24a, 24b) each being received on the bearing bolts (24d, 24e).
7. A rip fence module according to claim 6, characterised in that the coupling device (25) comprises a coupling pin (25a) extending in longitudinal direction (L) and being received rotatably in the carriage body (24f), on the side of which facing towards the guide groove (14a) on the one hand the arm arrangement (24c) is received pivotably and on which on the other hand the contact pressure strip (16g) is fastened, preferably on the free ends of the bearing bolts (24d, 24e).
8. A rip fence module according to claim 7, characterised in that the adjusting lever (23) comprises an eye section (23a) penetrated by the coupling pin (25a) and connected non-rotatably with the coupling pin (24h), connecting with the eye section (23a) to the carriage body (24f) on the side facing the rocker (24c), and on the side of the eye section (23a) facing away from the rocker (24c) a coupling section (25b, 25c, 25d) on the rear side coupling the coupling pin (25a) with an operating device (16a) of the locking device (16) is provided, by means of which the coupling pin (25a) and thus the contact pressure strip (16g) is movable between the locking position and release position.
9. A rip fence module according to claim 8, characterised in that the rear coupling section (25b, 25c, 25d) comprises a pusher sleeve (25b) received in vertical direction on the operating device (16a) in a guided manner encompassing the coupling pin (25a) on its sides located in the pull out direction (A) and opposite to this direction (A), as well as a washer (25c) fastened to the coupling pin (25a) on the side of the pusher sleeve (25b) facing away from the adjusting lever (23), with at least one coupling projection (25h) being provided on the pusher sleeve (25b) oriented towards the washer (25c), and on the washer (25c) for each coupling projection (25h) a coupling control groove (25g) facing towards it and extending in vertical direction, with the coupling control groove (25g) comprising on the underside an ascending end with a rounded or angled flank abutting the coupling projection (25h) in the intermediate position, and which is passed over, if the operating device (16a) of the locking device (16) is put from the release position into the locking position by an operator.
10. A rip fence module according to claim 9, characterised in that between the carriage body (24f) and rocker (24c) preferably a coupling bias spring (25e) is provided preloading the rocker (24c) in the direction of the release position, with maximum deflection of the coupling bias spring (25e) being adjustable by means of a coupling adjustment screw (25d) by means of which the washer (25c) penetrated by the coupling pin (25a) is fastened on the coupling pin (25a) on the side of the pusher sleeve (25b) facing away from the adjusting lever (23).
11. A rip fence module according to any one of the preceding claims, characterised in that as an operating device (16a) of the locking device (16) a pivoted lever (16a) is provided, which is received pivotably on the superstructure (9) between the release position and the locking position around a pivot axis extending in the extension direction (A), with the pivoted lever (16a) comprising at least a guided portion (16i, 16k) extending eccentrically to its pivot axis by means of which the locking device (16) is shiftable, and preferably the coupling device (25) is coupled with the pivoted lever (16a).
12. A rip fence module according to claim 11, characterised in that the pivoted lever (16a) comprises as an eccentric guided portion (16i) a guide groove (16i) extending eccentrically to its pivot axis, into which the pusher sleeve (25b) is received with a guide pin (16j) connecting at the top its arms encompassing the coupling pin (25a) so that the pusher sleeve (25b) can be actuated in vertical direction by the pivoted lever (16a).
13. A rip fence module according to claim 1 or 11, characterised in that the superstructure (9) is formed as a portal superstructure (9) entirely overlapping the machine table (3) in longitudinal direction (L), with the locking device (16) on the rear side of the machine table (3) facing away from the operator comprising a tension rod (16b) passing through the portal superstructure (9) in longitudinal direction (L) with the clamping spigot (16c) coupled to the operating device (16a) provided on the front side of the superstructure, and the clamping spigot (16c) by means of the operating device (16a) and the tension rod (16b) can be pressed into an allocated guide groove (14b) provided on the machine table side (locking position) and can be put into the release position movable transversely to the longitudinal direction (L).
14. A rip fence module according to claim 13, characterised in that the pivoted lever (16a), as an eccentric guided portion (16k), comprises, in a point located eccentrically to its pivot axis, a holding groove (16i), extending in parallel to the pivot axis, for a tension rod tie bolt (16f) in which holding groove the tension rod (16b) is received by means of the tension rod tie bolt (16f) fastened to it, and the clamping spigot (16c) is suspended rotatably on a hinge axis (16d) on the superstructure (9) extending in extension direction (A) with the tension rod (16b) engaging on the clamping spigot (16c) below the hinge axis (16d) so that the clamping spigot (16c) can be pivoted around the hinge axis (16d) by means of the pivoted lever (16a).
15. A rip fence module according to claim 1 or 13, characterised in that the superstructure (9) comprises a carrier section (9b) fastened between a front frame (9a) and a rear frame (9c) against which carrier section an angle bar (9d) forming a workpiece stop can be clamped by means of an angle bar clamping device (17) and can be released for shifting in longitudinal direction (L).
16. A rip fence module according to claim 15, characterised in that the angle bar (9d) comprises an undercut groove extending in longitudinal direction (L) and the angle bar clamping device (17) a contact pressure strip (17c) received in the undercut groove as well as a clamping screw (17b) passing through the carrier section (9b) and screwed to the contact pressure strip (17c) with a bias spring (17d) by means of which the contact pressure strip (17c) is preloaded away from the carrier section (9b)
17. A wood working machine (1), in particular a circular saw (1), with a machine table (3), which is penetrated by a tool, in particular a saw blade, and with a rip fence for positioning a workpiece with its edge facing away from the tool (2) with a certain distance to the tool (2) on the machine table (3) in order to carry out a relative movement of the workpiece to the tool (2) when the workpiece is positioned in longitudinal direction (L), in particular to lead the workpiece past the tool (2), with
    the rip fence comprising a superstructure (9) overlapping the machine table (3) at least in sections with a workpiece stop (9d) extending in longitudinal direction (L) for the workpiece to be treated, as well as at least one guided portion (24, 16g), which is guided movably in an extension direction (A) transversely to the longitudinal direction (L) in an allocated guide groove (14a) on the machine table, by means of which the superstructure (9) of the rip fence in extension direction (A) relatively the tool (2) is supported movably in the guide groove (14a), and with
    a locking device (16) shiftable between a locking position and release position being provided in order to lock the guided portion (24) in the locking position in the guide groove (14a) and to permit in the release position a shifting of the guided portion (24, 16g) in the guide groove (14a),
    characterised in that
    the guided portion (24, 16g) comprises a guided carriage (24) insertable into the guide groove (14a) at least in sections, which in turn comprises a number of ball bearings or roller bearings (24a, 24b) by which the guided carriage (24) inserted into the guide groove (14a) is movable on rollers in the release position on allocated roll-way surfaces of the guide groove (14a), with
    the guided carriage (24) comprising a carriage body (24f) defined on the superstructure (9) on which the number of ball bearings or roller bearings (24a, 24b) is received with an alterable distance to the allocated roll-way surface in each case, and with
    the distance being alterable between a rollable position, in which each of the number of ball bearings or roller bearings (24a, 24b) abuts a roll-way surface in the guide groove (14a), and a non-abutting withdrawal position for withdrawal of the guided carriage (24) inserted into the guide groove (14a) from the guide groove (14a), and with
    the wood working machine (1) comprising in particular the features mentioned in one of the preceding claims 2 to 16.
18. A wood working machine (1) according to claim 17, characterised in that an extension element (5) comprising for widening of the machine table (3) an extension plate (8) in alignment with the upper side of the machine table (3), which can be positioned in an extension direction (A) adjacent to the machine table (3), as well as two extension arms (7a, 7b) fastened to the extension plate (8) and received in a guided manner in the extension direction (A), in two guide rails (6a, 6b) be fastened on the table, so that the distance of the extension plate (8) from the machine table (3) is alterable, with at least one of the extension arms (7a, 7b) comprising a guide groove (14a, 14b) for the guided portion (24, 16g) of the rip fence.

Images